Promedix PR-770 Cordless Irrigator Oral Dental CarePromedix PR 770 Oral Irrigator The PR 770 is a modern cordless irrigator, of which strong water stream precisely removes food residues from the interdental spaces, maintaining oral hygiene. A strong stream with a force of up to 8. 5 Bar eliminates the problem of improper clearance of orthodontic appliances, bridges or implants. Irrigation can significantly reduce bleeding from the gums and the amount of bacteria that can cause inflammation. Promedix